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/*
This file is part of the clazy static checker.
Copyright (C) 2017 Sergio Martins <smartins@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "lambda-unique-connection.h"
#include "Utils.h"
#include "HierarchyUtils.h"
#include "QtUtils.h"
#include "TypeUtils.h"
#include "checkmanager.h"
#include "AccessSpecifierManager.h"
#include "ClazyContext.h"
#include <clang/AST/AST.h>
using namespace clang;
using namespace std;
LambdaUniqueConnection::LambdaUniqueConnection(const std::string &name, ClazyContext *context)
: CheckBase(name, context)
{
}
void LambdaUniqueConnection::VisitStmt(clang::Stmt *stmt)
{
auto call = dyn_cast<CallExpr>(stmt);
if (!call)
return;
// We want this signature:
// connect(const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
FunctionDecl *func = call->getDirectCallee();
if (!func || func->getNumParams() != 5 || !func->isTemplateInstantiation() || !QtUtils::isConnect(func) || !QtUtils::connectHasPMFStyle(func))
return;
Expr *typeArg = call->getArg(4); // The type
vector<DeclRefExpr*> result;
HierarchyUtils::getChilds(typeArg, result);
bool found = false;
for (auto declRef : result) {
if (auto enumConstant = dyn_cast<EnumConstantDecl>(declRef->getDecl())) {
if (enumConstant->getName() == "UniqueConnection") {
found = true;
break;
}
}
}
if (!found)
return;
FunctionTemplateSpecializationInfo *tsi = func->getTemplateSpecializationInfo();
if (!tsi)
return;
FunctionTemplateDecl *temp = tsi->getTemplate();
const TemplateParameterList *tempParams = temp->getTemplateParameters();
if (tempParams->size() != 2)
return;
CXXMethodDecl *method = QtUtils::pmfFromConnect(call, 3);
if (method) {
// How else to detect if it's the right overload ? It's all templated stuff with the same
// names for all the template arguments
return;
}
emitWarning(typeArg, "UniqueConnection is not supported with non-member functions");
}
REGISTER_CHECK("lambda-unique-connection", LambdaUniqueConnection, CheckLevel0)
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